JPH1077610A - Soundproof panel and sound-insulating wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproof panel and a sound-insulating wall capable of further reducing wind load. SOLUTION: The soundproof panel pivots a sound-insulating member 7 rotatably on the opening section 11 of a frame body formed of upper and lower horizontal members 2, 3 and left-right side plates by a shaft 71 protruded in the horizontal direction, rotates the sound-insulating member 7 to open the opening section 11 when wind pressure reaches a specified wind pressure or more, and restores the sound-insulating member 7 to close the opening section 11 when wind pressure reaches a specified wind pressure or lower. The sound-insulating member 7 is turned up to approximately 90 deg. under a horizontal state and the opening section 11 is opened by wind pressure by a wind directly colliding against the sound-insulating member 7 and force as lift generated by a wind blowing between the upper end of the sound-insulating member 7 and the underside 22 of an upper horizontal member 2 by installing the shaft 71 at a place upper than the center of the side face of the sound-insulating member 7 and bulging the underside 22 of the upper horizontal member 2 oppositely faced to the upper end of the sound-insulating member 7 in an approximately V-shaped cross section in the longitudinal direction at that time, and wind load is reduced effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof panel and a soundproof wall installed along a highway or a railway in order to isolate and absorb noises or the like caused by the running of a vehicle or the like. It is designed to reduce the wind load in response to strong winds.

[0002]

2. Description of the Related Art Conventionally, a soundproof wall having a height of about 1.5 to 3 m is installed along a highway or a railway line passing through an urban area in order to insulate or absorb noise and the like caused by running of a vehicle or the like. Have been. However, on an elevated road passing through the city center, a noise barrier of about 1.5 to 3 m is not sufficient as a noise countermeasure for condominiums along the road, and recently a noise barrier of about 7 m is required. It is supposed to be.
However, if such a high soundproof wall is installed on an elevated road, the load on the pier will be a large burden due to the effect of the wind load. Therefore, simply increasing the height of the conventional soundproof wall as it was was a problem. .

In view of such a problem, the present applicant has proposed a soundproof wall capable of reducing wind load and satisfying soundproof performance as described in Japanese Patent Application No. 8-19202. In one form of this soundproof wall, a plurality of soundproof members having a mountain-shaped cross section are arranged substantially horizontally at predetermined intervals in the vertical direction, and the sound insulation members are rotatably arranged between the soundproof members, and have a predetermined wind pressure. When the above occurs, the sound insulation member rotates and the space between the sound insulation members is opened to allow the wind to escape from between the sound insulation members, and when the pressure becomes lower than a predetermined wind pressure, the sound insulation member is restored, and the space between the sound insulation members is closed, thereby reducing noise and the like. Sound insulation and sound absorption.

[0004]

However, a wind tunnel experiment was conducted on the above soundproof wall, and a strong wind having a wind speed of 50 m / s was applied to measure the angle at which the sound insulating member was rotated and opened by the wind pressure. It turned out that it could only be opened, and it could not be opened at all until the angle at which the wind load could be reduced most, that is, near 90 degrees at which it became horizontal. The reason that the sound-insulating member rotates only up to about 50 degrees is that as the sound-insulating member rotates, the projected area of the sound-insulating member receiving the wind decreases and the rotational force due to the wind pressure decreases. This is considered to be due to the fact that it becomes heavier and harder to rotate. Therefore, with this soundproof wall, although the wind load can be reduced to some extent, it is not always sufficient.

Therefore, the present invention solves the above-mentioned problems,
It is an object of the present invention to provide a soundproof panel and a soundproof wall capable of further reducing a wind load.

[0006]

The inventor of the present invention has made intensive studies to solve the above-mentioned problems. As a result, the rotation shaft of the sound insulating member is provided at a position higher than the center of the side surface, and is opposed to the upper end of the sound insulating member. If the lower surface of the upper horizontal member bulges in a substantially V-shaped cross section in the front-rear direction, when a wind greater than the moment required to rotate the sound insulating member hits the sound insulating member, the rotation axis of the sound insulating member is positioned above the center of the side surface. Since the sound pressure is applied to the sound-insulating member, the sound-insulating member is provided with a rotational force such that the lower part of the sound-insulating member is moved in the leeward direction and lifted upward.
On the other hand, although not theoretically elucidated, as the sound insulating member starts to rotate due to the rotational force, a gap is generated between the upper end of the sound insulating member and the lower surface of the upper horizontal member, and the wind blows through the gap. As the wind blows through, the lower surface of the upper horizontal member is bulged in a substantially V-shaped cross-section, so that it is guided along the lower surface of the upper horizontal member and narrowed at the V-shaped lowermost portion. After passing through the lower part, it becomes an upward spiral flow, and by this spiral flow, a force such as lift that lifts the lower part of the sound insulating member rotated to a predetermined angle further acts, and such a lift as the lift due to this spiral flow Power
By adding to the rotational force due to the wind pressure that directly hits the sound insulating member, the sound insulating member can be opened by being rotated to an angle at which the wind load can be most reduced, that is, close to 90 degrees at which the horizontal state is achieved. Knowing this, the present invention has been completed.

In other words, the soundproof panel according to the present invention is configured such that the sound insulating member is rotatably supported by a rotating shaft protruding in the horizontal direction at the opening of the frame formed by the upper and lower horizontal members and the left and right side plates. When the wind pressure is equal to or higher than a predetermined wind pressure, the sound insulating member is rotated to open the opening, and when the wind pressure is equal to or lower than the predetermined wind pressure, the sound insulating member is restored and the opening is closed. The rotation shaft is provided at a position higher than the center of the side surface of the sound insulation member, and the lower surface of the upper horizontal member opposed to the upper end of the sound insulation member is bulged in a substantially V-shaped cross section in the front-rear direction. The sound-insulating wall according to the present invention is characterized by the following:
The soundproof panel may be formed by stacking a plurality of soundproof panels in a wall shape.

According to the present invention, when the wind pressure is less than a predetermined value, the opening is closed by the sound insulating member, so that noise or the like is sound-absorbed or absorbed. To open the opening and effectively reduce the wind load, so even if installed on an elevated road, etc., the height of the soundproof wall can be increased without placing too much load on the pier. it can.

In the present invention, the upper surface of the lower horizontal member opposed to the lower end of the sound insulating member may be flat, but if it is raised in a substantially mountain-shaped cross-section in the front-rear direction, it follows the upper surface of the mountain-like shape. The wind guided by the wind acts as an upward wind and acts to lift below the sound insulating member, so that the sound insulating member can be rotated more effectively.

In the present invention, the sound insulating member is rotated when the wind pressure is equal to or higher than a predetermined wind pressure, and the sound insulating member is restored when the wind pressure is equal to or lower than the predetermined wind pressure. May be set to occur, but in order to more easily control this rotation,
It is preferable to provide a restoring member such as a weight, a spring, an air cylinder, a solenoid valve or the like formed separately from the sound insulating member.

In the case where a restoring member is further provided, a rotary shaft is fixed to the sound insulating member, and a supporting arm projects in both horizontal directions from the rotating shaft, and a pair of the restoring members are sandwiched between the supporting arms by the rotating shaft. If the sound-insulating member is closer to a horizontal level where the sound-insulating member is less susceptible to wind pressure, the horizontal distance from the mounting position of the restoring member to the rotation axis decreases, the moment by the restoring member decreases, and the rotation of the sound-insulating member increases. Disappears.

In the above case, a weight is used as the restoring member,
If the lower part of the weight is supported by the pedestal and only one weight is lifted when the sound insulation member is open,
The rotation of the sound insulation member can be effectively controlled with a light weight.

In the case where a plurality of soundproof panels according to the present invention are stacked in a wall shape between pillars standing at intervals, a soundproof member is provided on each of the plurality of soundproof panels. If a common restoring member is connected, the structure of each soundproof panel can be simplified and the manufacturing cost can be reduced.

A magnet for restraining the rotation of the sound insulating member together with or instead of the restoring member may be provided between the upper end of the sound insulating member and the upper horizontal member or between the lower end of the sound insulating member and the lower horizontal member. Between the upper end of the sound insulating member and the upper horizontal member, and between the lower end of the sound insulating member and the lower horizontal member, and in accordance with a predetermined wind pressure for rotating the sound insulating member in this way. By attaching a magnet having a strong magnetic force, the sound insulating member can be reliably stopped at a predetermined wind pressure or lower with a simple structure, and can be reliably rotated at a predetermined wind pressure or higher.

Further, in the present invention, the upper horizontal member may be formed of a simple plate-like body, but is provided in a hollow panel formed by arranging a perforated plate having a large number of apertures on its upper and lower surfaces. It is preferable to form the sound absorbing material from the inside in which the noise incident on the upper horizontal member from the perforated plate is sound-insulated and absorbed, and the soundproofing effect is improved.

The lower horizontal member may be formed of a mere plate-like member. However, as in the case of the upper horizontal member, the lower horizontal member is formed by arranging perforated plates having a large number of apertures on the upper and lower surfaces thereof. It is preferable to form the hollow panel with a sound absorbing material provided inside the hollow panel, since noise entering the lower horizontal member from the perforated plate is sound-insulated and absorbed, and the soundproofing effect is improved.

Further, the sound insulating member may be formed of a mere plate, but is formed by arranging a perforated plate having a large number of openings on one surface and arranging a sound insulating plate on the other surface. A hollow panel formed of a sound absorbing material inside a hollow panel or a perforated plate having a large number of openings on both front and back surfaces and a sound insulating plate disposed between both perforated plates When the sound absorbing material is formed from the interior, the sound incident on the sound insulating member from the perforated plate is absorbed by the sound absorbing material, and the sound is prevented from leaking to the other side by the sound insulating plate, thereby improving the soundproofing effect. It is preferred.

Further, if the sound insulation member is formed of a light transmitting plate having a support frame attached to the outer periphery, the sound insulation member does not obstruct the surrounding scenery with the sound insulation member, so that the landscape is not spoiled.

[0019]

Next, an embodiment of the present invention will be specifically described with reference to the drawings. First, FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a sectional view.

In FIGS. 1 to 3, reference numeral 1 denotes a frame body, an upper transverse member 2 having a substantially central portion at the lowermost portion 21 and a lower surface 22 bulging in a V-shaped cross section in the front-rear direction. The upper side 32 is composed of a lower horizontal member 3 having a top 31 and an upper surface 32 raised in a substantially mountain-shaped cross-section in the front-rear direction, and left and right side plates 4. The opening 11 is provided in the front-rear direction. End plate 5
The box part 5 is formed by the end plates 1 and 52 and the front and rear end plates 53 and 54. As described above, the lower surface 22 of the upper horizontal member 2
Is bulged in a substantially V-shaped cross section in the front-rear direction. Specifically, the lowermost portion 21 is slightly flat, and the inclination angle of the V-shape is generally a gentle angle of about 5 to 25 degrees. However, the shape is not particularly limited, and the shape may be a slightly rounded curved surface as long as the shape is almost V-shaped. The shape does not need to be strictly V-shaped. Any shape may be used as long as the wind is narrowed at the lowermost portion 21 to generate a force such as lift.

The upper surface 32 of the lower horizontal member 3 is raised in the front-rear direction so as to have a substantially mountain-shaped cross section. Specifically, the top 31 is slightly flat, and the angle of inclination of the mountain is generally 5 degrees. The angle is set to about 45 degrees, but is not particularly limited.

The frame 1 has upper and lower surfaces of the upper and lower horizontal members 2 and 3 formed with a protrusion 23 and a recess 33 which can be fitted to each other, and the frame 1 is vertically stacked in a plurality of stages. This is done so that sound leakage does not occur between the stacked frames 1. The frame body 1 can be assembled as a soundproof wall or the like by fitting the left and right box portions 5 at appropriate intervals into concave grooves of an H-shaped column which is erected on a side edge of a road or the like. it can. An insertion hole 55 for the fall prevention wire 6 is formed in the box portion 5 as appropriate. If the fall prevention wire 6 is inserted into the insertion hole 55 and locked on a support, the frame can be cut even if a vehicle or the like collides. The body 1 is prevented from detaching from the column.

Reference numeral 7 denotes a sound insulating member, which is provided with a rotary shaft 71 projecting from a position above the center of the left and right side surfaces in a horizontal direction, and the rotary shaft 71 is provided on bearings 41 formed on the left and right side plates 4 of the frame 1. And the upper end thereof is opposed to the lowermost portion 21 of the V-shaped lower surface 22 of the upper horizontal member 2 and the lower end thereof is opposed to the top 31 of the upper surface 32 of the lower horizontal member 3 raised in a mountain shape. It is rotatably supported by the part 11. Further, the end of the rotating shaft 71 extends into the box portion 5, and the support arm 72 extends in both horizontal directions perpendicular to the surface of the sound insulating member 7 with the rotating shaft 71 interposed therebetween. String 73
As a result, weights 74 serving as restoring members are suspended from each other, and lower portions of the weights 74 are placed on the pedestals 56 of the lower end plate 52, respectively. The length of the cord 73 is the length of the support arm 7
When the sound insulating member 7 is rotated to any position by wind pressure, only one of the weights 74 is lifted. With the center of the rotation shaft 71 as a fulcrum, the rotation shaft 7
1 and the moment a × W due to the weight W of the weight 74 acting on the sound insulating member 7, when the wind pressure falls below a predetermined value, the sound insulating member 7 is rotated in the reverse direction in a direction of restoring, and the opening is opened. 11 is closed.

At the lower end of the sound insulating member 7, a magnet 8 is attracted to the top 31 of the upper surface 32 of the lower transverse member 3, and also at the lowermost portion 21 of the lower surface 22 of the upper transverse member 2 to the upper end of the sound insulating member 7. Are mounted respectively. The attraction force of the magnet 8 is added to the moment a × W by the weight 74 and the moment due to its own weight to control the rotation of the sound insulation member 7 and to restore the sound insulation member 7 to close the opening 11 so that the opening 11 is closed. The sound insulating member 7 is reliably stopped without swinging due to the attraction force of the magnet 8. Reference numeral 81 denotes a holder for mounting the magnet 8, and the holder 81 includes the sound insulating member 7, the upper and lower horizontal members 2,
It also plays the role of eliminating the gap with 3.

How the wind load is reduced in the above embodiment according to the present invention will be described with reference to FIGS.
First, FIG. 4 shows a case where the wind pressure of the wind F is equal to or lower than a predetermined value.
4, the sound insulation member 7 is stopped by the moment a × W, the moment by its own weight, and the attraction force by the magnet 8,
The opening 11 is closed, and noise and the like are insulated and absorbed. When the wind F having a wind pressure equal to or greater than the sum of the moment a × W by the weight 74, the moment by its own weight, and the attraction force by the magnet 8 is applied to the sound insulating member 7, the rotating shaft 71 of the sound insulating member 7 moves from the center of the side surface. Since the sound insulation member 7 is provided at an upper position, the sound insulation member 7 is first given a rotational force such that the sound insulation member 7 flows downward in the leeward direction and is lifted upward, and starts rotating.

Next, when the sound insulating member 7 is rotated, a gap is formed between the upper end of the sound insulating member 7 and the lower surface 22 of the upper horizontal member 2, as shown in FIG. Become. Since the lower surface 22 of the upper horizontal member 2 is bulged in a substantially V-shaped cross section, the wind F that blows through is narrowed at the substantially V-shaped lowermost portion 21 while being guided along the lower surface 22,
After passing through the lowermost part 21, an upward spiral flow is formed. Although not theoretically elucidated, the spiral flow has a lift force such that the lower part of the sound insulating member 7 rotated to a predetermined angle by the wind pressure is further lifted. Such a force acts, and due to the force such as the lift and the rotational force due to the wind pressure that directly hits the sound insulating member 7, the sound insulating member 7 becomes an angle at which the wind load can be reduced most, as shown in FIG. The opening 11 is opened by being rotated to nearly 90 degrees, and the wind load is reduced.

As the sound insulating member 7 rotates, that is, as it approaches horizontal, the horizontal distance a from the weight 74 to the rotating shaft 71 decreases and the moment a × W by the weight 74 decreases, so that the sound insulating member 7 rotates more. Easier,
The weight 74 does not cause the weight to stop rotating.

Next, when the wind pressure becomes substantially equal to or less than the combined force of the moment a × W by the weight 74 and other moments due to its own weight, the sound insulating member 7 is reversely rotated in a direction of restoring by these moments. 4 and is stopped without swinging with the opening 11 closed as shown in FIG.

It should be noted that there is no particular limitation as to how much the wind is blown when the sound insulating member 7 is to be rotated. However, according to the standard for closing a vehicle on a highway, the vehicle is closed when the wind speed is 25 m or more. Therefore, the sound insulation member 7 is generally rotated at a wind speed of 25 to 30 m / s, and
It is preferable to determine the moment a × W by the weight 74, the moment by its own weight, and the attraction force by the magnet 8 so as to start closing at about m / s.

The length of the sound insulating member 7 is 154 mm,
The position of the rotation shaft 71 is 48 mm from the upper end of the sound insulating member 7, the length of the support arm 72 from the rotation shaft 71 to the mounting position of the weight 74 is 89 mm, the weight of the weight 74 is 160 g, and the V-shaped bulge is formed. The inclination angle of the lower surface 22 of the upper horizontal member 2 is set to about 12
A prototype of the soundproof panel having the inclination angle of the upper surface 32 of the lower horizontal member 3 of about 13 to 13 degrees and the angle of about 6 to 7 degrees is prototyped, and the angle at which the sound insulation member 7 rotates is measured by changing the wind pressure. A wind tunnel experiment was performed. As a result, when the wind speed is gradually increased to 25 to 30 m / s, the sound insulating member 7 starts to rotate,
When the wind speed is further increased to about 40 m / s, it rotates to almost 90 degrees and becomes almost horizontal, the opening 11 is opened, and then when the wind speed is gradually decreased, 10 to 15 m / s is obtained.
It was confirmed that the opening 11 was closed by the reverse rotation at s, and the opening 11 was closed. From these results, according to the soundproof panel of the present invention, the sound insulation member 7 closes the opening 11 at a wind pressure of a predetermined level or less, so that noise and the like are sound-absorbed and absorbed. 90 to be horizontal
It turns out that the opening 11 is opened by rotating to nearly the degree, and the wind load is effectively reduced.

In this embodiment, the sound insulating member 7 is formed by arranging a perforated plate 75 having a large number of openings on both front and back surfaces, and arranging a sound insulating plate 76 between both perforated plates 75. The sound absorbing material 77 is formed inside the panel, and the noise that has entered the sound insulating member 7 from the perforated plate 75 is absorbed by the sound absorbing material 77 and is also shielded by the sound insulating plate 76 without leaking to the other. However, the sound insulating member 7 may have a light transmitting property and a sound insulating property formed by attaching a support frame to the outer periphery of the light transmitting plate.

In the present embodiment, the upper horizontal member 2 is formed from a hollow panel formed by arranging a perforated plate 24 having a large number of apertures on its upper surface and lower surface 22 and having a sound absorbing material 25 provided therein. The lower horizontal member 3 also has a perforated plate 3 having a large number of apertures on its upper surface 32 and lower surface, as in the case of the upper horizontal member 2.
The sound absorbing material 35 is formed inside a hollow panel formed by arranging the sound absorbing materials 4, and the noises incident from the perforated plates 24 and 34 are absorbed by the sound absorbing materials 25 and 35, respectively. However, the sound incident on the upper horizontal member 2 and the lower horizontal member 3 from the opening 11 side is not leaked to the other side.
A sound insulating plate may be provided on the upper surface of the upper horizontal member 2 or the lower surface of the lower horizontal member 3.

Next, FIG. 7 shows a case in which a plurality of soundproof panels according to the above-described embodiment are stacked in a wall shape between pillars 9 standing at intervals to form a soundproof wall. The projections 23 and the depressions 33 of the panels are stacked while being fitted to each other, and the box portions 5 of the respective soundproof panels are fitted into the concave grooves 91 of the columns 9 having the H-shaped cross section to be assembled as a soundproof wall. Since the wind load is reduced by using the soundproof panel according to the above embodiment, the height of the soundproof wall can be increased without placing a great burden on the pier even when the soundproof panel is installed on an elevated road.

[0034]

According to the present invention, when the wind pressure is lower than a predetermined value, the opening is closed by the sound insulating member, so that noise or the like is sound-absorbed or absorbed. When the wind pressure exceeds the predetermined wind pressure, the sound insulating member becomes horizontal. Since the opening is opened by rotating to near the limit and the wind load is effectively reduced, the height of the soundproof wall is increased without placing a great burden on the pier even when installed on an elevated road etc. be able to.

In the present invention, if the upper surface of the lower horizontal member opposing the lower end of the sound insulation member is raised in the front-rear direction to have a substantially mountain-shaped cross section, the wind guided along the mountain-shaped upper surface becomes Since the wind acts as an upward wind and acts to lift below the sound insulating member, the sound insulating member can be rotated more effectively.

In the present invention, the sound insulating member is rotated when the wind pressure exceeds a predetermined value, and the sound insulating member is restored when the pressure decreases below the predetermined wind pressure. Is preferred.

In the case where a restoring member is further provided, a rotary shaft is fixed to the sound insulating member, and a supporting arm projects in both horizontal directions from the rotating shaft, and a pair of the restoring members is sandwiched between the supporting arms by the rotating shaft. If the sound-insulating member is closer to a horizontal level where the sound-insulating member is less susceptible to wind pressure, the horizontal distance from the mounting position of the restoring member to the rotation axis decreases, the moment by the restoring member decreases, and the rotation of the sound-insulating member increases. Disappears.

In the above case, a weight is used as the restoring member,
If the lower part of the weight is supported by the pedestal and only one weight is lifted when the sound insulation member is open,
The moment of the sound insulation member can be effectively and stably controlled with a light weight.

In the case where a plurality of soundproof panels according to the present invention are stacked in a wall shape to form a soundproof wall between pillars which are erected at intervals, the soundproof members provided on the plurality of soundproof panels, respectively. If a common restoring member is connected, the structure of each soundproof panel can be simplified and the manufacturing cost can be reduced.

A magnet for restraining the rotation of the sound insulating member together with or instead of the restoring member may be provided between the upper end of the sound insulating member and the upper horizontal member, or between the lower end of the sound insulating member and the lower horizontal member. Between, or between the upper end of the sound insulating member and the upper horizontal member and between the lower end of the sound insulating member and the lower horizontal member,
By attaching a magnet having a magnetic force corresponding to a predetermined wind pressure for rotating the sound insulating member in this way, the sound insulating member can be securely stopped at a predetermined wind pressure or less with a simple structure, When the wind pressure is equal to or higher than the above, the sound insulating member can be surely rotated.

Further, in the present invention, if the upper transverse member is formed of a hollow panel formed by arranging a perforated plate having a large number of apertures on the upper surface and the lower surface, a sound absorbing material is provided inside the hollow panel. This is preferable because noise incident on the upper horizontal member from the perforated plate is sound-insulated and absorbed, so that the soundproofing effect is improved and the weight can be reduced.

Similarly to the upper horizontal member, the lower horizontal member has a hollow panel formed by arranging a perforated plate having a large number of apertures on the upper surface and lower surface, and a sound absorbing material is provided inside the hollow panel. It is preferable to form from the viewpoint that noise incident on the lower horizontal member from the perforated plate is sound-insulated and absorbed, thereby improving the soundproofing effect and reducing the weight.

Further, the sound insulating member may be formed of a simple plate, but is formed by arranging a perforated plate having a large number of openings on one surface and arranging a sound insulating plate on the other surface. A hollow panel formed of a sound absorbing material inside a hollow panel or a perforated plate having a large number of openings on both front and back surfaces and a sound insulating plate disposed between both perforated plates If sound-absorbing material is formed inside, the sound incident on the sound-insulating member from the perforated plate will be absorbed by the sound-absorbing material, and the sound-insulating plate will also prevent noise from leaking to the other side, thus improving the soundproofing effect. Is preferred.

Further, if the sound insulation member is formed of a light transmitting plate having a support frame attached to the outer periphery, the sound insulation member does not obstruct the surrounding scenery with the sound insulation member, so that the landscape is not spoiled.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a soundproof panel according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a sectional view of FIG. 1;

FIG. 4 is an explanatory view showing how a wind load is reduced in the present invention.

FIG. 5 is an explanatory diagram showing how a wind load is reduced in the present invention.

FIG. 6 is an explanatory diagram showing how a wind load is reduced in the present invention.

FIG. 7 is a perspective view showing one embodiment of a soundproof wall according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 11 Opening part 2 Upper horizontal member 22 Lower surface 3 Lower horizontal member 32 Upper surface 4 Side plate 41 Bearing 5 Box part 6 Fall prevention wire 7 Sound insulation member 71 Rotation axis 72 Support arm 74 Weight 8 Magnet 9 Post 91 Recessed groove

Claims (13)

[Claims] 1. A sound insulation member is rotatably supported by an opening of a frame formed by upper and lower horizontal members and left and right side plates by a rotation shaft projecting in a horizontal direction, and the sound insulation member is above a predetermined wind pressure. When the sound insulation member rotates, the opening is opened, and when the pressure becomes lower than a predetermined wind pressure, the sound insulation member is restored, and the opening is closed. A soundproof panel provided at a position higher than a center of a side surface of a member, and a lower surface of an upper horizontal member opposed to an upper end of the sound insulating member is bulged in a front-rear direction in a substantially V-shaped cross section. 2. The soundproofing panel according to claim 1, wherein the upper surface of the lower horizontal member facing the lower end of the soundproofing member is raised in a front-rear direction with a substantially mountain-shaped cross section. 3. The soundproof panel according to claim 1, wherein a restoring member is provided on the sound insulating member, and the sound insulating member is restored by the restoring member at a predetermined wind pressure or less. . 4. A support arm protrudes in both horizontal directions from a rotation shaft fixed to the sound insulation member, and a pair of restoration members is attached to the support arm with the rotation shaft interposed therebetween. Item 3. The soundproof panel according to Item 3. 5. The restoration member is a weight, a lower portion of the weight is supported by a pedestal, and only one of the weights is lifted when the sound insulation member is in an open state. Or the soundproof panel of 4. 6. A magnet for restricting rotation of the sound insulating member, wherein the magnet is provided between the upper end of the sound insulating member and the upper horizontal member, between the lower end of the sound insulating member and the lower horizontal member, or between the upper end of the sound insulating member and the upper horizontal member. The soundproof panel according to any one of claims 1 to 5, wherein the soundproof panel is provided between the member and a lower end of the sound insulating member and the lower horizontal member. 7. The sound absorbing material is provided inside a hollow panel formed by arranging a perforated plate having a large number of openings on its upper and lower surfaces. 7. The soundproof panel according to 6. 8. The lower horizontal member is provided with a sound absorbing material inside a hollow panel formed by arranging a perforated plate having a large number of apertures on its upper and lower surfaces. 8. The soundproof panel according to any one of items 7 to 7. 9. The sound insulating member has a perforated plate having a large number of openings on one surface and a sound absorbing material inside a hollow panel formed by arranging a sound insulating plate on the other surface. 9. The soundproofing panel according to claim 1, wherein: 10. The sound insulating member includes a perforated plate having a large number of openings on both front and back surfaces, and a sound absorbing material is provided inside a hollow panel formed by disposing a sound insulating plate between both perforated plates. The soundproof panel according to claim 1, wherein: 11. The sound insulation panel according to claim 1, wherein the sound insulation member has a support frame attached to an outer periphery of the light transmitting plate. 12. A soundproofing wall comprising a plurality of soundproofing panels according to claim 1 stacked between walls of a support pillar standing at an interval. 13. The sound insulation wall according to claim 12, wherein the sound insulation members respectively provided on the plurality of sound insulation panels are connected to a common restoration member.